Control device for printing machines



Aug. 9, i938. c. w. GINSBERG CONTROL DEVICE FOR PRINTING MACHINES FiledDec. 6, 1935 Patented Aug. 9, 1938 we STATES CONTROL DEVICE FOR PRINTINGMACHINES Charles W. Ginsberg, Brooklyn, N. Y., assignor to R. Hoe & 00.,Inc.

, New York, N. Y., a corporation of New York Application December 6,1935, Serial No. 53,193

13 Claims.

This invention relates to improvements in delivery and controlmechanisms for printing or like machines and more particularly relatesto a choke detecting device for use with delivery mechanisms wherebypossibly damaging chokes will be detected and the machine promptlystopped, to avoid damage to the parts thereof.

In printing and like machines, chokes caused by products becomingcollected and jammed between the various parts of the delivery mechanismfrequently occur, causing broken machine parts, and considerableinconvenience and loss of time, due to stoppages, required to repair theparts and to release the choke. Chokes have been found to occur afterthe products have passed the folding rollers of a delivery mechanism andare disposed between the receiving fan and a product guide, while beingcarried from the rollers to a delivery belt or other conveyor.

One of the objects of this invention is to provide in association with adelivery mechanism, means to detect the presence of a choke and to causethe immediate stoppage of the machine when the choke assumes proportionsapproaching a predetermined damaging degree.

Another object is to provide in a delivery mechanism, a product guidingmember which, upon being moved by a collection of products pressingthereagainst during the formation of a choke, will be caused to detect adamaging proportion thereof and to operate a control to prevent furtheroperation of the machine.

A further object is to provide in a delivery mechanism, a productguiding member which is movable by an unwarranted collection of productsbetween it and a part of said delivery mechanism, and is adjustable topredeterminably limit the degree of such collection of products beforesuch movement occurs, and is adapted when so moved to operate a machinecontrol, which is adjustable for actuation thereby, after apredetermined degree of such movement has taken place.

It is also an object of this invention to provide a delivery and controlmechanism for printing machines of generally improved construction,whereby the device will besimple, durable and. inexpensive inconstruction, as well as con vcnient, practical, serviceable andefficient in its use.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts, and in the details of construction hereinafterdescribed and claimed.

The preferred embodiment of the invention is illustrated in theaccompanying drawing wherein the features of the invention are somewhatdiagrammatically shown, embodied in a delivery and folding mechanism ofa printing machine for printing newspapers and like folded products;another position of some of the parts being shown in dotted lines.

The printed web ll, leading from a printing or like machine, is shownrunning between a folding cylinder [2 and a cutting cylinder is fromwhich it is fed between a pair of folding rollers l4 and 15, in the formof a folded sheet it, into pockets [1 of a rotatable fan or fly [8. Fromthe fan I8 the folded sheets 16 are deposited on delivery belts l9.

During their passage from the rollers I4 and i5 to the fan IS theproducts It, in some instances, bunch up in the position indicated indotted lines at 2|, causing a choke to be formed between the fan I8 anda product guide 22, usually provided at this point. The guide 22 isherein shown secured to a shaft 23 supported in an end of a supportingmember 24, having an extended stem portion 25. The stem portion 25 issupported for sliding movement in a bracket 26 secured by screws 21, toa machine frame part 28. A spring 29, disposed between the bottom of acounterbore 3i formed in the bracket 26 and a shoulder 32 formed on thestem 25, tends to urge the guide 22 in a direction toward the product ito maintain the guide in its normal product engaging position, as shownin full lines in the drawing, but permits movement of the guide 22 in adirection away from the product, to the position shown in dotted lines.The guide 22 is freely rockable about the shaft 23 as a pivot, and isprovided with a curved face disposed adjacent to and partially embracingthe periphery of the fly or fan 18. The guide 22 cooperates with thepockets H to hold the products on the fly i8 while they are beingcarried thereby past the guide and, by cooperation with the periphery ofthe fly l8, confines the loose product ends extending from the pocketsl1 substantially until the products are in position to be deposited uponthe delivery belts l9.

Adjustment of the guide 22 to vary the normal product engaging positionthereof, is made possible by the threaded engagement of a stop collar 33with the threaded end 34 of the stem 25. The collar 33 may be secured inposition on the stem 25 by means of a set screw 35. By cooperation withthe end of the bracket 26 the collar 33 determines the normal positionof the guide 22 in respect to the product It and the fan 98. Anythickness of products in excess of the determined allowable amount willmove the guide 22 and its stem 25.

To immediately detect and obviate the formation of possibly damagingchokes, a control device, herein including an electrical switch 36, isprovided. The switch 36 is connected by conductors 3'! and 38 to themotor controls of the printing machine (of which the cylinders l2 and l3form a part), and is normally in closed circuit condition. Opening ofthe machine motor circuit by actuation of the switch 36 causes theimmediate stoppage of the machine and the prevention of damage to thedelivery mechanism.

Provision is herein made to actuate the switch 36 by movement of theguide 22 by an excess of collected products, through engagement of acollar 39, threadingly adjustable on the stem 25 and which is securablethereto in adjusted position thereon, by a set screw 4|. The collar 39may be adjusted on the stem 25 to engage an operating member 42 of theswitch 36, when moved with the stem 25 by the guide 22, to causeactuation of the switch 36 into open circuit condition, whereby themachine motor will stop, and thus cause stoppage of the feed of productsto the delivery mechanism.

The switch 36 may be adjustably mounted upon a stationary part of themachine or, as shown, secured to the bracket 26 by a strap member 43 todispose its operating member 42 into the path of movement of the collar39. The collar 39, by being adjustable on the stem 25, permitsadjustment of the device to permit a predetermined thickness of productsto be collected and to pass the guide 22 without causing the switch 36to be actuated to effect the operation of the machine motor.

The provision of the choke detecting and control device described above,and as illustrated in one form in the drawing, permits a predeterminedthickness of products to be collected and passed to the conveyor I9without the formation of damaging chokes, while preventing thecollection of large excesses of products beyond the determined amount bydetecting the same and stopping the machine with its associated deliverymechanism, beforedamage occurs. Due to the adjustable features abovedescribe-d, a predetermined number of products may be collected andpassed, and slight excesses therein permitted, before the switch 36 isactuated, making the device particularly useful under the varyingconditions met with in printing newspapers and like products.

It will be understood that the invention may be embodied in otherspecific forms without departing from the spirit or essential attributesthereof, and it is therefore desired that the present embodiment beconsidered in all respects as illustrative and not restrictive, and itwill be further understood that each and every novel feature andcombination present in or possessed by the mechanism herein disclosedforms a part of the invention included in this application.

What I claim is:

1. In a delivery mechanism for a machine wherein products are folded anddelivered, a rotary fly to receive and carry products, a guide disposedadjacent the periphery of the fly to be engaged by the products as theypass by the guide, while being carried by the fly, a bracket in whichsaid guide is slidably mounted, said guide being slidable in saidbracket upon being engaged by an excess of products passing thereby, acontrol device adapted to be connected to the machine to stop the same,means to actuate said control device upon sliding movement of said guideby the products, and means to return the guide to its initial positionafter the excess of products has been removed.

2. In a delivery mechanism for folding and delivering products of aprinting machine, a rotatable member adapted to receive and carryproducts, a guide disposed adjacent the periphery of said member andpast which the products are moved While being carried by the member, abracket in which said guide is slidably mounted, said guide beingslidable in said bracket away from said member when engaged by an excessof products passing thereby, means to adjust said guide to vary itsspacing from said member to permit varying amounts of products tosimultaneously pass thereby without moving the same, control meansoperable to stop delivery of the products and actuated by the movementof said guide by an excess of the products in one direction, and aspring to return said guide to its initial position after the excess ofproducts has been removed.

3. In a delivery mechanism for folding and delivering products from aprinting or like machine, a rotary member, a product guide mountedadjacent the periphery of the member and arranged for movements indirections toward and away from the periphery of the member, means toconstantly urge said guide in 'a direction toward the member, adjustingmeans to limit such movement, and adjustable means adapted to controlthe delivery of products and operable by the movement of said guide in adirection away from the member.

4. In a delivery mechanism for folding and delivering products from aprinting or like machine, arotary member, a product guide mountedadjacent the periphery of the member and arranged for movements indirections toward and away from the periphery of the member, resilientmeans to constantly urge said guide in a direction toward the member,adjustable means to limit such movement of said guide, control meansadapted to control the delivery of products, control actuating meansmovable with the guide, and means to adjust said control actuating meansto vary the required amount of movement of said guide in a directionaway from the member to actuate the control means.

5. In a delivery mechanism for folding and delivering products from amovable part of a printing or like machine, a rotary fly having pocketsto receive products on its periphery, a product guide disposed adjacentthe periphery of the fly, a support for said guide, said guide beingslidable relatively'to said support in directions toward and away fromthe periphery of the fly, spring means to constantly urge said guide ina direction toward the fly, an adjustable stop to limit the movement ofsaid guide in the direction toward the fly, control means adapted to beassociated with the movable part of the machine to stop the movementthereof, and connecting means between said guide and said control meanswhereby movement of said guide in a direction away from the fly willactuate said control means to stop the movable machine part, saidconnecting means including a part slidably movable with the guide andadjustable to permit various amounts of movement of said guide in adirection away from the fly before said control means will be actuatedthereby.

6. In combination, means to deliver a product from a printing machine, arotatable fly having means to hold and carry a product upon itsperiphery, a member disposed adjacent to and spaced from the peripheryof said fly to cooperate with the product carrying means to retain aproduct thereon and being slidably mounted for movement toward and awayfrom said fly, a control device adapted to stop the delivery of productsby said delivery means, and a part adjustably secured to said member foradjustment thereon in the direction of the movement of, and movable withsaid member to actuate said control device when an excess of productsbecomes disposed between said fly and said member.

7. In combination, means to deliver products from a printing machine, arotatable fly having means to hold and carry products upon itsperiphery, a member adjacent to, and normally spaced a determined amountfrom, the periphery of said fly and being slidably mounted for movementaway therefrom, the member cooperating with said product holding meansto retain products upon said part, a control device adapted to stop thedelivery of products by the delivery means, a part adjustably secured tosaid member for adjustment thereon in the direction of the movement of,and movable with, the member to actuate said control device when anexcess of products becomes disposed between said fly and said member,and a part adjustably secured to said member for adjustment in thedirection of the movement thereof and adapted to vary the normal spacingof said member from the periphcry of said rotatable fly.

8. In combination, means to deliver products from a printing machine, arotatable fly having means to hold and carry products upon itsperiphery, a guide member adjacent to, and normally spaced a determinedamount from, the periphery of said fly to permit a determined thicknessof products to pass therebetween, and being slidably mounted formovement away therefrom by an excess in the thickness of products, aspring acting on said guide member to maintain it in its normallyspace-d position, the member cooperating with said product holding meansto retain products upon said fly while the products pass thereby, acontrol device adapted to stop the delivery of products by the deliverymeans, a part secured to and movable with the member and adjustablethereon toward and away from said fly to actuate said control devicewhen said member is moved by an excess of products, and means to varythenormal spacing of said member from the periphery of the rotatable fly.

9. In combination, means to deliver products from a printing machine, arotatable fly having means to hold and carry products upon itsperiphery, a guide member adjacent to, and normally spaced a determinedamount from, the

periphery of said fly to permit a determined thickness of products topass therebetween, a slidable support extending from said guide memberaway from said fly and upon which said member is mounted for freerocking movement, a control device adapted to stop the delivery ofproducts by the delivery means, a control actuating member adjustablymounted on the slidable support to vary the amount said support with themember moves away from the fly before actuation of said control device,a spring to urge said guide member toward said fly, and a stopadjustably mounted on said support to limit the movement of said guidemember by said spring and to vary the normal spacing of said member fromthe periphery of said rotatable fly.

10. In a delivery mechanism for a printing machine, means to foldproducts, a rotary fly having pockets to receive the folded productsfrom said folding means, a freely rockable member disposed adjacent tothe periphery of said fly, spaced therefrom, and partially embracing thesame to permit products carried by said fly to pass therebetween whilebeing carried thereby, a control device having an actuating arm adaptedto interrupt the operation of said folding means, a support upon whichsaid member is mounted, a stem extending from said support, a bracket inwhich said stem is slidable to permit the member to be moved away fromthe periphery of said fly when the member is engaged by an excess ofproducts attempting to pass between it and said fly, a spring acting onsaid support to maintain said member in operative position adjacent saidfly, a stop member on said stem to limit the movement of said support bysaid spring and a part adjustably mounted on said stem and movable withsaid support to engage said actuating arm to actuate said control devicewhen said member is moved by an excess of products disposed between itand said fly.

11. In the delivery mechanism of a printing machine, having productfeeding means, a rotatable fly adapted to receive and carry sheetproducts from the feeding means to a point of delivery, a sheet guidehaving a curved face presented toward said fly, a support upon an end ofwhich said guide is pivotally mounted, a bracket in d which said supportis mounted for sliding movement to move said guide toward and away fromsaid fly, a stem extending from the other end of said support and havingan outer end disposed beyond said bracket, a spring acting against saidsupport to urge it toward said fly, a stop adjustably secured on theouter end of said stem and adapted to engage the bracket and limit themovement of said support toward said fly, a control device operable tostop said feeding means, and a part adjustably secured on the outer endof said stem and adapted to actuate said control device when said guideis moved against spring tension away from said fly by an excess ofproducts collecting therebetween.

12. In a delivery mechanism having a rotatable fly, a guide memberdisposed adjacent said fly and having a concave surface facing said flyand being spaced from the periphery of the fly to permit productscarried by said fly to pass, a support upon the end of which said memberis mounted, a bracket in which said support is slidable to move and tocarry said member toward and away from said fly, a spring acting againstsaid support to urge it toward said fly, a control device operable tostop the delivery mechanism,

and means carried by said support to actuate said control device whenthe support is moved against spring tension by an excess of productscollecting between said fly and said guide.

13. In a delivery mechanism having a rotatable fly, a guide memberdisposed adjacent said fly and having a concave surface facing said flyand being spaced from the periphery of the fly to permit productscarried by said fly to pass, a support upon the end of which said memberis mounted, a bracket in which said support is slidable to move and tocarry said member toward and away from said fly, a spring acting againstsaid support to urge it toward said fly, an adjustable stop to limit themovement of said support toward said fly, a control device operable tostop the delivery mechanism, and a part adjustable lengthwise on saidsupport and adapted to actuate said control device when the support ismoved against spring tension by an excess of products collecting betweensaid fly and said guide.

CHARLES W. GINSBERG.

